17. The coldest of all air masses is a) A b) mT c) cP d) T

18. Whereas, the moistest of all air masses is a) A b) mT c) cP d) cT

19. In the Northern Hemisphere, the Coriolis force bends the wind toward a) its left b) its right c) None of the above

20. The structure of the CBL over land is described as a) A surface layer at the bottom, a mixed layer in the middle and an entrainment layer at the top b) Troposphere, stratosphere, mesosphere and exosphere c) A thermocline layer d) None of the above

21. The geostrophic wind is defined as a) A wind perpendicular to the isobars b) The result of a balance between the pressure gradient force and the Coriolis force c) A wind the rotates around a center d) None of the above

22. The geostrophic wind is the wind regime of a) The free atmosphere b) The surface layer c) The mixed layer d) None of the above

23. The roughness length is the height at which the average wind speed is: a) 10 m/s b) 0 m/s c) geostrophic d) none of the above